Home / 3,111.81-4,299.75-2,487.48

Finding the Fourth Proportional to 3,111.81, 4,299.75 and 2,487.48

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Solution

The fourth proportional to 3,111.81, 4,299.75 and 2,487.48 is: 3,437.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.81 : 4,299.75 = 2,487.48 : x
  2. Step 2: Convert to fraction form
    3,111.81/4,299.75 = 2,487.48/x
  3. Step 3: Cross multiply
    3,111.81x = 4,299.75 × 2,487.48
  4. Step 4: Simplify right side
    3,111.81x = 10,695,526.01
  5. Step 5: Solve for x
    x = 10,695,526.01/3,111.81
  6. Step 6: Final answer
    x = 3,437.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.